Hi

I am working on a project and i had to blast up an HP printer for some components.
I needed a light type of sensor which it actually reads every time it is crossed.
It seems that is used to read revolutions, a spot is made at a certain point and when it is crossed in the sensor it counts as a revolution.

I found this sensor in the printer but my problem is that i cannot find the part number or datasheet on how to connect it to use in my project.

All i need is to know how to connect it so a datasheet or maybe someone knows how to connect it is enough.

Here with this message there are to pictures of this sensor available. It has 4 pins going out of the sensor.
Please con someone help me figure them out

Thanks in advance.

 

It looks like an opto-interrupter:

http://translate.google.co.uk/translate?hl=en&sl=de&u=http://www.wiki.elektronik-projekt.de/elektronik/agilent_q9846&ei=i-8yTNHEJp-I0wTqnbmaAw&sa=X&oi=translate&ct=result&resnum=1&ved=0CB0Q7gEwAA&prev=/search%3Fq%3Dagilent%2Bq9846%26hl%3Den

 

it is more like a sine/cosine encoder....

WikiAnswers says:

A Sine-Cosine Encoder is a position transducer using only two sensors, each 90 degrees out of phase with respect to each other, driving an up/down counter through appropriate logic. Since sine and cosine are 90 degrees out of phase with repect to each other, this technique is called sine-cosine encoding.

The computer mouse is an example of this technique.

Usually these would have four leads coming from them, 2 are for power, the other 2 are outputs from the encoder sensors....


B. Morse